static void Main(string[] args)
{
Sello.mensaje = "Agustin";
Sello.color = ConsoleColor.Red;
Console.WriteLine(Sello.Imprimir());
Console.ReadLine();
Sello.Borrar();
Console.WriteLine(Sello.Imprimir());
Console.ReadLine();
Sello.mensaje = "Agustin";
Sello.ImprimirEncolor();
Console.ReadLine();
Sello.color = ConsoleColor.Black;
Sello.ImprimirEncolor();
Console.ReadLine();
}